Two Blocks of Masses 20 Kg and 9

question 58

Multiple Choice

Two blocks of masses 20 kg and 9.0 kg are connected together by a light string and rest on a frictionless level surface.Attached to the 9.0-kg mass is another light string,which a person uses to pull both blocks horizontally.If the two-block system accelerates at 0.80 m/s²,what is the tension in the second string attached to the 9.0-kg mass?

• A)23 N
• B)14 N
• C)16 N
• D)7.2 N
• E)25 N

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